Slicing machine



Jan. 7,1930. w CAMPBELL 1,742,577

SLICING MACHINE Filed June 11, 1928 2 Sheetg-Sheet '1' Jan. 7, 1930. w. J. CAMPBELL 1,742,577

SLICING MACHINE Filed June 11, 1928 v 2 Sheets-Sheet 2 Z; FGMILL wnnmm .1. cmnnLL, or INDIANAPOLIS, mnmim, assreiwon 'ro mnnrcm smcme Patented Jan. 7, 1930 UNITED STATES PATENT I orrjica mcnmn COMPANY, 01 CHICAGO, ILLINOIS A CORPORATION 013 NEW YORK SLIOING MACHINE Application am June 11,

- mgs, wherein Figure 1 is a horizontal section;

Figure 2 is a rear elevation;

Figure 3 is a fragmental horizontal section illustrating a varlant form of adjustable gauge plate;

Figure 4 is a section on the line 4-4 of' Figure 2;

Figure 5 is a front elevation of a modification 5 Figure 6 is a section on the line 6'6 of Figure 5; and

Figure 7 is a section on the line 77 of Figure 5.

Like parts are indicated by like symbols throughout the specification and drawings.

A indicates any suitable base member upon which is mounted the motor A with the motor shaft A the pulley A about which passes the belt A.

Bgenerally indicates the rotary knife on the knife shaft B associated with which is a pulley B about which passes the belt A. I

- it is preferable to. the-rear of the knife edged rtion (1 adapted to penetrate within the orward recess B of the knife. It will be observed that the axis of the knife preferably lies in a horizontal plane but is tilted slightly from perpendicularity in relation to the guard plate G, in order to bring the cutting arc of the knife into or beyond the plane of the guard plate.

D nerall indicates a rear guard member the gauge plate and conforming 1928. Serial No. 284,293.

as at B in order to receive the edge or periph- I er D of the guard I generall indicates a gauge plate with the arcuate e ge E generally concentric with and opposed to the cutting arc of the knife. Any means may be employed to move the gauge plateE toward and away from the plane of the knife and laterally toward and away from theedge of the. knife. Referring to the dotted line position of the gauge plate v in Figure 1, I'illustrate the preferred movement of the gauge plate which is along a path inclined to the cutting plane of the knife in such fashion that recession of the gauge plate widens the throat between gauge plate and knife in two directions. However the invention herein shown isoperable with gauge plates which are drawn directly back from i the cutting plane, as indicated in the full and dotted line positions in Figure Mounted onthe gauge plate E I indicate a guard member G. The guard 'may be formed integrally with the gauge plate or it may be secured thereto as by the screws G. It Is arcuate. in form and includes a portion G: extending laterally toward the knife from I enerally to the contour of theknife. It will fie observed, from Figures land 3, that the guard member overlies or overlaps the rear .of the exposed arc of the knife in such fashion as to make it impossible for the finger of the operator to enggae the knife edge along the cutting arc. The size of the member G is suc that it efiiciently exercises its guarding funcv [tion even when the The front of the knife is protected by theguard plate C which includes an arcuategauge plate is withdrawn to a maximum depth.

When the gauge plate is closely set the guard portion G'r may extend to or almost to the edge D of the guard D. However there is sufiicient space between the knife and the-member G forthe slices to escape after However thetray H is in 'osition to receive ?theslices if the are permitted to fall.

er to protect the fingers of the o rator about the lower arc of the knife, whet or from the front or the rear I provide an additional guard member herein shown as mounted on the gauge plate. It includes the bod or base portion J adjustably mounted on t e gauge late as by the slots J and jacent the cutting edge in such fashion that the finger of the operator cannot engage the cutting edge. The guard may be set close to the edge, as by the adjusting means above indicated and since it is positioned below the cuttin arc proper, there is no interference with t e operation'of the device.

It will be understood that any suitable meat carriage, herein generally indicated as K,

may be moved across the face of the gauge late and guard plate as on the tracks K IV. It will be observed that the level of the guard J is below the bottom of the meat carriage and that therefore it does not interfere with the operation of the knife.

Note that in the form of Figures 2 and 4 .the gauge plate E is slotted to receive the securing screws of the body portion J of the guard member. In Figures 5 and 6 I illustrate a variant form in which the body portion L of the guard, slotted for adjustment as at L, is secured to the front of the gauge plate as by the adjusting screws L The arcuate portion L is opposed to the cutting edge of the knife in like fashion as the member J It will be realized that whereas I have described and shown a practical and operative device, nevertheless many changes might be made in the size, shape, number and disposition of parts without departing from the spirit of my invention. I therefore wish my description and drawings to be taken as in a broad sense illustrative and diagrammatic rather than as limiting me to my specific showing. i

The use and operation of my invention are as follows:

In employing a slicing machine of the type herein shown there is constant risk of damage to the operator, of cut or severed fingers, unless the edge of the knife is properly protected. I have provided a peculiarly c'om plete shielding of the cutting edge. Referring for example to Figures 1" and 2 well over half'of the periphery. of the knife is entirely enclosed. The guard member Gr overlies and entirely protects most of: the remaining exposed arc,-including the rear of the knife along the cutting are proper. The members J a or L may be adjustedso closely to the remaining of the exposed cutting edge, over the work receivingtray H, asto make it impossible for the operator to engage the cutting edge with his finger. This leaves exposed only the actual cuttingarc of the knife, the are extending from the top to. the bottom of the gauge plate on the front of the machine. Thus except for the cutting are actually necessary to engage the material to be cut, the entire edge of the knife is protected and the result is a slicing machine as safe as its functions can permitit to be. The'edge is entirely protected from the rear and protected except along the actual cutting arc in the front.

I claim:

1. In a slicing machine which includes a rotary knife, a carriage and means for conveying its across the face of the knife and a gauge plate generally parallel with the path of movement of the carriage, a guard member associated with said gauge plate and' overlying the rear face of the knife at all positions of the gauge plate.

2. In a slicing machine which includes a rotary knife, a carriage and means for conveying it across the face of the knife and a gauge plate generally parallel with the path of movement of the carriage, a guard mem-' ber associated with said gauge plate, and extending laterally therefrom toward the opposed knife edge and overlying the rear face of the knife at all positions of the gauge plate.

3. In a slicing machine which includes a rotary knife, a carriage and means for con veying it across the face of the knife and a gauge plate generally parallel with the path of movement of the carriage, a guard member extendin laterallyand rearwardly from the egge of t e gauge plate opposed to the knife e ge. g g

4. In a slicing machine which includes a rotary knife, a carriage and means for con-' veying it across the face of the knife and a gauge plate generally parallel with the path I of movement of the carriage, a guard member extending laterally and rearwardly from the edge of the gauge plate opposed to the knife tingarc of the knife. I 5. In a slicing machine which includes a" rotary knife, a carriage and means for--jconveying it across the face of the knife and'a' edge, and overlying, the rear face of thema 1 gauge plate generally parallel with the path of movement of the carriage',-'a guar'd'mem-' ber extending laterally and rearwardl'y from the edge of the gauge plate opposedtothe knife edge, and overlying 'therea'r face ofithe' cutting arc of the knife, said guardftermn nating in an arcuate edge generally concen trio with the knife axis.

veying it across the fence of the knife and a". gauge plate generally parallel with thepath of movementof the carriage, a g'uardgfor the rear of said knife, said guardterm'inating in an arcuate edge ortion closely approaching the rear face of t 'ej knife about an arc-lying within the periphery. of the knife, and a'gu'a rdw member, associated with said gauge plate and.

projecting laterally therefrom and overlying riage across said gauge plate and past the that portion of the rear face of the cutting arc of the knife which is exposed by said first mentioned guard.

7. In a slicing machine which includes a rotary knife, a carriage and meansfor conveying it across the face of the knife and a gauge plate generally parallel with the path of movement of the carriage, a guard for the rear of said knife, said guard terminating in an arcuate edge portion closely approaching the rear face of the knife about an arc lying within the periphery of the knife, and a guard member, associated with said gauge plate and projecting laterally therefrom and overlying that portion of the rear face of the cutting arc of the knife which is exposed by said first mentioned guard, said last mentioned guard member lying in a plane generally parallel with the plane of the opposed knife surface.

8. In a slicing machine. which includes a rotary knife, a carriage and means for conveying it across the face of the knife and a gauge plate generally parallel with the path of movement of the carriage, a guard member extending laterally and rearwardly from the edge of the gauge plate opposed to the knife edge, and overlying the rear face of the cutting arc of the knife, said guard member being generally uniformly spaced from the opposed rear surface of the knife. 7

9. In a slicing machine having a rotary knife and means for rotating it, a guage plate, a carriage and means for guiding said carriage across said gauge plate and past the cutting edge of the knife, a slice receiving member adjacent and to the rear of the cutting arc of the knife and a guard for the edge of the knife adjacent and just above said slice receiving member, said guard being positioned upon and movable with said guage plate and extending about the edge of the knife adjacent but beneath the cutting are.

10. In a slicin machine-having a rotary knife and means or rotating it, a gauge plate,

a carriage and means for guiding said carriage across said gauge plate and past the cutting edge of the knife, a slice receiving member adjacent and to the rear of the cutting arc of the knife and a guard for the edge of the knife adjacent and just above said slice receiving member, said guard being positioned upon and movable with said guage plate and extending about the edge of the knife adjacent but beneath the cutting arc,

and an additional guard means mounted upon said gauge plate, said guard means being adapted to overlie therear face'of the knife at all positions of the adapted to mask from t e rear the actual cutting arc of the knife.

11. In a. slicing machine having a rotary knife and means for rotating it, a gauge late, a carriage and means for guiding sai carcutting edge of the knife, a slice receiving member adjacent and to the rear of the cut- I of the knife above said first mentioned guard for the cutting arc.

13. In a slicing machine having a rotary knife and means for rotating it, a gauge plate, a carriage and means for guiding said carriage-across said gauge plate and past the cutting edge of the knife, a slice receiving member adjacent and to the rear of the cutting arc of the knife, a guard positioned upon said gauge plate, adapted to guard the cutting arc of the knife from the rear, at all positions of the gauge plate and additional guard means adapted to guard the edge of the knife adjacent but above the cutting arc. Signed at Indianapolis, county of Marion and State of Indiana, this 5th day of June WILLIAM J. CAMPBELL.

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